We are facing huge traffic drop since April 1st.
No, It doesn’t seem so.
Infact in my 4 sites, The organic traffic have grown by over 40% in last 40 days.
Where were your target audience from?
It may be due to your ranking drops in few big keywords.
I have seen my ranking of few topics increase to the top in last one month which were stable at rank 3-5, Now they have gone to 0 and 1…
Not at all. Even my organic traffic increased by 20%
Investigate whether ranking dropped or CTR via google webmaster.
Nope organic traffic increased by 40%